Setup coverity for 8.3 branch #80

Job	Run time
cross-compilation (aarch64-linux-gnu, libc6-dev-arm64-cross, linux-aarch64)	31m 54s
cross-compilation (arm-linux-gnueabi, libc6-dev-armel-cross, linux-armv4, -test_includes -test_st...	25m 16s
cross-compilation (arm-linux-gnueabihf, libc6-dev-armhf-cross, linux-armv4, -test_includes -test_...	24m 50s
cross-compilation (mips-linux-gnu, libc6-dev-mips-cross, -static linux-mips32, -test_includes -te...	28m 28s
cross-compilation (mips64-linux-gnuabi64, libc6-dev-mips64-cross, -static linux64-mips64)	18m 54s
cross-compilation (mipsel-linux-gnu, libc6-dev-mipsel-cross, linux-mips32, -test_includes -test_s...	30m 15s
cross-compilation (riscv64-linux-gnu, libc6-dev-riscv64-cross, linux64-riscv64)	38m 15s
cross-compilation (s390x-linux-gnu, libc6-dev-s390x-cross, linux64-s390x)	24m 5s
cross-compilation (mips-linux-gnu, libc6-dev-mips-cross, linux-mips32, none)	1m 53s
cross-compilation (mips64-linux-gnuabi64, libc6-dev-mips64-cross, linux64-mips64, none)	1m 36s
	3h 45m 26s

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